MBR180S1-7 Schottky Rectifier Specifications and Applications

ElecSuppliers Part Number GuideSep 26, 2026

MBR180S1-7 is a single Schottky barrier rectifier from Diodes Incorporated. It is designed for low-voltage and high-frequency rectification where low forward voltage, compact size, and efficient switching are important.

The device is rated for a maximum repetitive reverse voltage of 80V and an average rectified current of 1A. It uses a compact SOD123 surface-mount package, making it suitable for PCB designs where board area and component height need to be controlled.

The MBR180S1 family is commonly used in power conversion, reverse-polarity protection, and power OR-ing circuits.

MBR180S1-7 Electrical Specifications

MBR180S1-7 has a peak repetitive reverse voltage rating of 80V and a maximum average rectified current of 1A.

The maximum forward voltage is specified at 0.80V at a forward current of 1A and an ambient temperature of 25°C. At a junction temperature of 125°C, the typical forward voltage is approximately 0.59V under the specified test condition.

The lower forward voltage of a Schottky rectifier can help reduce conduction losses compared with conventional PN-junction rectifiers in suitable low-voltage power applications.

MBR180S1-7 Reverse Leakage

The maximum reverse leakage current is specified at 5µA at 25°C with an 80V reverse voltage. Reverse leakage increases significantly with temperature, so thermal conditions should be considered when the device is used close to its maximum voltage rating.

The relatively low leakage at room temperature makes the device suitable for many power conversion and protection circuits where standby losses need to be controlled.

Designers should evaluate leakage current at the actual operating temperature rather than relying only on the room-temperature specification.

MBR180S1-7 Surge Current

MBR180S1-7 has a peak forward surge current rating of 24A. This capability allows the rectifier to tolerate short-duration current surges under the specified test conditions.

Surge capability is important in power supplies where capacitor charging, switching events, or other transient conditions can produce current peaks significantly higher than the normal operating current.

The surge rating should not be treated as a continuous operating current. Thermal design must be based on the average and peak currents expected in the actual application.

MBR180S1-7 Schottky Characteristics

Schottky diodes use a metal-semiconductor junction rather than the conventional PN junction used in standard rectifier diodes. This structure generally provides a lower forward voltage and fast switching characteristics.

These characteristics make MBR180S1-7 useful in high-frequency power conversion circuits where switching efficiency is important.

The device also uses guard-ring die construction for transient protection and is designed for surface-mount power applications.

MBR180S1-7 Package

MBR180S1-7 uses a SOD123 surface-mount package. The compact package allows the rectifier to be placed close to switching devices, inductors, capacitors, and other power components.

The small package can help reduce PCB area in compact DC-DC converters and power management circuits. Engineers should follow the manufacturer's recommended PCB pad dimensions and thermal layout requirements when designing the board.

Although the device is compact, the PCB copper area still affects heat dissipation. Thermal performance should therefore be evaluated according to the actual forward current and switching conditions.

MBR180S1-7 Applications

MBR180S1-7 can be used in AC-DC converters, DC-DC converters, reverse battery protection circuits, power OR-ing circuits, and other power management applications.

In a DC-DC converter, the Schottky rectifier can provide a low-loss current path during part of the switching cycle. In a reverse-polarity protection circuit, it can prevent current from flowing in the wrong direction while introducing a relatively low forward voltage.

Power OR-ing applications can use the diode to isolate multiple supply paths and prevent one power source from feeding back into another.

MBR180S1-7 Reverse Battery Protection

Reverse battery protection is a common application for MBR180S1-7. The diode can be placed in series with the power input so that the circuit receives power when the battery is connected correctly while blocking current when polarity is reversed.

The main design trade-off is the forward voltage drop. At higher current, the power dissipated by the diode increases according to the forward voltage and current.

For applications where the voltage drop is too high, designers may consider MOSFET-based ideal-diode protection. However, MBR180S1-7 provides a simpler solution when the power loss is acceptable.

MBR180S1-7 Power OR-ing

MBR180S1-7 can also be used to isolate multiple power sources in OR-ing circuits. Each supply can be connected through a diode so that the higher available supply powers the load while the diodes help prevent reverse current between the sources.

The 80V reverse-voltage rating provides a useful margin for many low-voltage power architectures. The actual voltage rating required should be determined from the maximum transient and steady-state voltage present in the system.

MBR180S1-7 Thermal Design

The power dissipated by MBR180S1-7 is primarily related to its forward voltage and current. As the operating current increases, the junction temperature can rise significantly if heat cannot be transferred effectively to the PCB.

The SOD123 package relies heavily on the PCB copper area for heat dissipation. A suitable copper pad and thermal layout can therefore improve the operating margin.

Engineers should calculate the expected power dissipation and verify junction temperature under maximum load and ambient temperature conditions.

MBR180S1-7 PCB Design

MBR180S1-7 should be placed close to the associated power switching or protection circuitry to minimize parasitic resistance and inductance.

In high-frequency converter designs, short current paths are particularly important because parasitic inductance can increase voltage spikes and switching losses.

The PCB layout should also provide sufficient copper around the diode terminals for current carrying and heat dissipation. The manufacturer's recommended soldering and pad-layout guidelines should be followed during PCB development.

MBR180S1-7 Sourcing

When sourcing MBR180S1-7, buyers should verify the complete part number, manufacturer, package, voltage rating, current rating, and packaging format.

The MBR180S1 family is available in a compact SOD123 configuration, but buyers should still confirm the exact ordering code because package and tape-and-reel designations can differ between related products.

For production procurement, the required quantity, delivery schedule, date-code requirements, and acceptable sourcing channels should be specified before quotation.

MBR180S1-7 for Power Electronics

MBR180S1-7 provides a compact 80V Schottky rectification solution with a 1A average rectified current rating and 24A peak forward surge capability. Its low forward voltage and SOD123 package make it suitable for compact power conversion and protection circuits.

For new designs, engineers should verify reverse voltage, average current, surge current, forward voltage, leakage current, switching frequency, PCB thermal conditions, and ambient temperature before selecting MBR180S1-7 for production.